Definition: In this task, you are given an input list A. You need to convert all the alphabets in the list with a number representing their position in the English alphabet. E.g., replace A by 1, B by 2, a by 1, b by 2, and so on.
Input: ['4731', '119', 'v', 'V', 'E', 'o', 'B']

4731, 119, 22, 22, 5, 15, 2